Maybe these are preliminary tests on wildlife to be later used on humans.
Anything s possible nowadays.
Louisiana and Kentucky too
http://www.wbrz.com/news/hundreds-of-dead-blackbirds-found-near-new-roads/
http://www.wpsdlocal6.com/news/local/Woman-reports-dozens-of-dead-birds-in-her-yard-112830524.html
and dead fish in Arkansas too
Mysterious Death of Birds, Fish Puzzle Arkansas Residents
http://www.kspr.com/news/local/kfsm-mysterious-death-of-birds-fish-01032011,0,41484.story
The birds died as a result of fireworks.
“And in Arkansas:
First Birds Fall, Now 100,000 Fish Dead in Arkansas”
Video:
http://www.youtube.com/watch?v=YmF2e0bIj4Y